javascript - HelloComponent 不是 NgModule 的一部分，即使它列在入口组件中？

Question

我已经created a stackblitz我试图实例化 HelloComponent动态地使用ReflexiveInjector我有 HelloComponent在应用程序模块 entryComponents 中列出数组。

但是我仍然得到:

Component HelloComponent is not part of any NgModule or the module has not been imported into your module.

想法？

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Answer 1

您还应该在模块的声明数组中声明 HelloComponent。 Read the official docs about entrycomponents .

import { NgModule } from '@angular/core';
import { BrowserModule } from '@angular/platform-browser';
import { FormsModule } from '@angular/forms';

import { AppComponent } from './app.component';
import { HelloComponent } from './hello.component';

@NgModule({
  imports:      [ BrowserModule, FormsModule ],
  entryComponents: [HelloComponent],
  declarations: [ AppComponent, HelloComponent ], // declare here
  bootstrap:    [ AppComponent ]
})
export class AppModule { }